# Napa.js **Repository Path**: mirrors/Napa.js ## Basic Information - **Project Name**: Napa.js - **Description**: Napa.js 是微软开源的一个基于 V8 的多线程 JavaScript 运行环境 - **Primary Language**: JavaScript - **License**: MIT - **Default Branch**: master - **Homepage**: https://www.oschina.net/p/napajs - **GVP Project**: No ## Statistics - **Stars**: 13 - **Forks**: 2 - **Created**: 2017-10-19 - **Last Updated**: 2024-05-29 ## Categories & Tags **Categories**: javascript-toolkits **Tags**: None ## README [![Build Status for Linux/MacOS](https://travis-ci.org/Microsoft/napajs.svg?branch=master)](https://travis-ci.org/Microsoft/napajs) [![Build Status for Windows](https://ci.appveyor.com/api/projects/status/github/Microsoft/napajs?branch=master&svg=true)](https://ci.appveyor.com/project/napajs/napajs) [![npm version](https://badge.fury.io/js/napajs.svg)](https://www.npmjs.com/package/napajs) [![Downloads](https://img.shields.io/npm/dm/napajs.svg)](https://www.npmjs.com/package/napajs) # Napa.js Napa.js is a multi-threaded JavaScript runtime built on [V8](https://github.com/v8/v8), which was originally designed to develop highly iterative services with non-compromised performance in Bing. As it evolves, we find it useful to complement [Node.js](https://nodejs.org) in CPU-bound tasks, with the capability of executing JavaScript in multiple V8 isolates and communicating between them. Napa.js is exposed as a Node.js module, while it can also be embedded in a host process without Node.js dependency. ## Installation Install the latest stable version: ``` npm install napajs ``` Other options can be found in [Build Napa.js](https://github.com/Microsoft/napajs/wiki/build-napa.js). ## Quick Start ```js const napa = require('napajs'); const zone1 = napa.zone.create('zone1', { workers: 4 }); // Broadcast code to all 4 workers in 'zone1'. zone1.broadcast('console.log("hello world");'); // Execute an anonymous function in any worker thread in 'zone1'. zone1.execute( (text) => text, ['hello napa']) .then((result) => { console.log(result.value); }); ``` More examples: * [Estimate PI in parallel](./examples/tutorial/estimate-pi-in-parallel) * [Max sub-matrix of 1s with layered parallelism](./examples/tutorial/max-square-sub-matrix) * [Parallel Quick Sort](./examples/tutorial/parallel-quick-sort) * [Recursive Fibonacci with multiple JavaScript threads](./examples/tutorial/recursive-fibonacci) * [Synchronized loading](./examples/tutorial/synchronized-loading) ## Features - Multi-threaded JavaScript runtime. - Node.js compatible module architecture with NPM support. - API for object transportation, object sharing and synchronization across JavaScript threads. - API for pluggable logging, metric and memory allocator. - Distributed as a Node.js module, as well as supporting embed scenarios. ## Documentation - [Napa.js Home](https://github.com/Microsoft/napajs/wiki) - [API Reference](./docs/api/index.md) - [FAQ](https://github.com/Microsoft/napajs/wiki/FAQ) # Contribute You can contribute to Napa.js in following ways: * [Report issues](https://github.com/Microsoft/napajs/issues) and help us verify fixes as they are checked in. * Review the [source code changes](https://github.com/Microsoft/napajs/pulls). * Contribute to core module compatibility with Node. * Contribute bug fixes. This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact opencode@microsoft.com with any additional questions or comments. # License Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the [MIT](https://github.com/Microsoft/napajs/blob/master/LICENSE.txt) License.